Help Identifying the maker of these fab earrings

Hi, good evening all

I would like help please in finding out the maker of these fabulous art-deco (style) earrings

For pierced ears, drop 2.5" - made up of 7 individual articulated stations, linked with loops. The stations are a rectangular shape with pointed ends and the size gets smaller as they go down. Each station has 2 diamond shaped raised areas, one at each side

Together this pair weight 20.6g

There is a makers stamp on the second station down on each earring

I cannot decipher the mark - it looks almost oriental, but it is not writing. It looks like bamboo sometimes - or a beetle, or other insect.

The yellow metal is very soft, as I can see what looks like teeth identations in it. You may be able to see one in one of my photos.

I am baffled. These are really nice, and I would simply like to find a little more out about them

Many Thanks in Advance

Lorna